20a, Skerry Hill, Mansfield, NG18 2PR

20a is a one-bedroom semi-detached house in Mansfield (NG18 2PR). It has a recorded floor area of 37 m² (around 398 sq ft), construction records dating it to 1991-1995 and council tax band A. The latest certificate (November 2022) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since February 2011. Between certificates, window efficiency went from Average to Good, hot-water efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while main heating dropped from Poor to Very Poor. The recommended improvements would push it to C (score 77). Main heating runs on electricity. At 37 m² this is the 3rd smallest of 25 units on EPC record in the building, where floor areas span 36–115 m². The building's EPC ratings span E to B across 25 units on file.

Held since June 1995 — that's 31 years off the open market, well above the local norm. Only one transfer is on record with HM Land Registry, suggesting it has stayed in the same hands for a long time. Today's modelled estimate of £97,000 sits 385% above the 1995 sale of £20,000. On a £-per-square-foot basis, the last sale (£50/sq ft) was about 40.8% below the postcode norm. At 37 m² it sits well below the postcode median (79 m² across 24 EPCs), making it one of the more compact homes locally.